[DOCS] Fix typo in limit example

[colin-ho]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #3303 will degrade performances by 40.18%

_{Comparing colin/fix-limit-example (a37126f) with main (ca8f25d)}

Summary

⚡ 1 improvements
❌ 1 regressions
✅ 15 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	colin/fix-limit-example	Change
⚡	test_iter_rows_first_row[100 Small Files]	369.1 ms	279.3 ms	+32.12%
❌	test_show[100 Small Files]	15 ms	25 ms	-40.18%

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.66%. Comparing base (ca8f25d) to head (a37126f).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3303      +/-   ##
==========================================
+ Coverage   75.90%   77.66%   +1.75%     
==========================================
  Files         667      668       +1     
  Lines       83922    82100    -1822     
==========================================
+ Hits        63699    63761      +62     
+ Misses      20223    18339    -1884     

Files with missing lines	Coverage Δ
daft/dataframe/dataframe.py	86.65% <ø> (ø)

... and 20 files with indirect coverage changes